Futaba NR4J Rx NiCd Flat 4.8V 600mAh J Receiver Battery Pack INCLUDES: One Receiver Battery Pack w/wire and J connector This is the NR4J Rechargeable NiCad Receiver Battery Pack for Futaba or compatible J style Radio Systems; This battery pack is shrink-wrapped with wire and connectors pre-installed This is the NR4J Rechargeable NiCad Receiver Battery Pack for Futaba or compatible J style Radio Systems; This battery pack is shrink-wrapped with wire and connectors pre-installed